Creo Simulate > Reference Links > Developing a Model (Native Mode)
Developing a Model (Native Mode)
Before you can analyze or optimize a model, you must develop it. In developing a model, you complete a number of different tasks—from creating the part geometry to adding the characteristics, properties, and definitions that transform the part into a Creo Simulate model. The following is a list of the tasks you complete:
Planning and building your model—You need to build your model geometry. In integrated mode, you build your geometry in Creo Parametric using methods that promote Creo Simulate modeling and analysis.
Simplifying your model—You can speed up your solution times and ease your simulation modeling tasks if you work with a simplified model. You can use various techniques to simplify your model within Creo Parametric.
Defining a system of units for your model—You need to define a system of units for your model. You can select a predefined system of units or create a custom system of units.
Defining modeling prerequisites for your model—You can define a variety of modeling prerequisites. For example, you can define coordinate systems for your model. Creo Simulate uses coordinate systems to help determine the direction and placement of a load, the orientation of a material, and for certain types of constraints and measures.
You can also define datum geometry, surface regions, and volume regions. These features give you a more versatile approach to placing loads, constraints, measures, and idealizations.
Defining modeling entities for your model—You can add the following modeling entities:
Materials—You need to define the material or materials your model will be made of. You can also define material orientations.
Constraints—For Structure, you need to define the extent to which your model can move in space. For Thermal, you need to define the convection conditions and prescribed temperatures that act as boundary conditions for the model.
Loads—For Structure, you need to define the external forces that will act on your model relative to its constraints. For Thermal, you need to define the heat loads that act on your model.
Defining idealizations—Creo Simulate treats Creo Parametric parts and assemblies as solid models. As an alternative, you can define your model as a shell or beam model. Shell and beam modeling can reduce run times and disk space requirements.
Shell modeling is appropriate for parts that are thin in one dimension, such as sheet metal parts. Beam modeling is a good choice for parts that are thin in two dimensions, such as rods or struts. With beam modeling, you can define your entire model as a set of beams, or you can define beams for a portion of the model and use solids or shells for the remainder.
You can also add specialized idealizations such as masses and springs. These entities enable you to model concentrated masses and general six-degree-of-freedom spring connections.
Defining connections — You can define various connections in your model. For example, you can create contacts for your model or add spot welds. Connections tell Creo Simulate where the different parts of your model contact as well as describe the nature of that contact. Creo Simulate uses this information to develop an appropriate mesh.
Defining measures—You can define custom measures to obtain result values for specific points on your model or to obtain response information for vibration analyses.
Checking the mesh—Creo Simulate automatically creates a model mesh as part of analysis. However, you can use AutoGEM, Creo Simulate's automatic mesh creation facility, to check this mesh prior to run time. If, when you examine the AutoGEM mesh, you feel there may be problems with certain areas in your model, you can use AutoGEM to refine or correct the mesh.
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